# Define here the models for your spider middleware
#
# See documentation in:
# https://docs.scrapy.org/en/latest/topics/spider-middleware.html

import scrapy
from scrapy import signals

# useful for handling different item types with a single interface
from itemadapter import is_item, ItemAdapter

# 取得 Cookies 清单
def get_cookies_dict():
    cookies_str = 'cf_clearance=3vz_oUYq0uCFaqEp_rJjQaSYN.VW0f3Kr2.BUNqmN4w-1705332447-1-AYuG5OyF6RL9YVpqkN4/0LhjPPBOaMBQ7LYBfD9wE8qP70g49AyGWDbfxkmspOlBc81MuEa5Z7PhyL27M+wHFZ4=; _gid=GA1.2.237827904.1716992269; cf_clearance=bjw63ZzeU2idDiLTLEf8w92a3oH.g2fbIDBWJ8B5kA4-1716992269-1.0.1.1-UjLYvGf1XFX0GcuDwI1a1j3Evt_ksCSm1C7teEsXoAeJ_O7nrbLjxFM_F5UCHyOdFNTLurh81Oc3_z7xbgi7Bg; XSRF-TOKEN=eyJpdiI6InZleVFDMjE5bEdjcFJPK0ozNm04TkE9PSIsInZhbHVlIjoiU3RkRFNcL0FORFRLVXNjK210UWozampBSENFUzNpTExoVUt1TzliUFJFUHZ3OUZUcTV4RTdDM3FOVUZ2T3dpXC9WIiwibWFjIjoiMDViZWQ4NDVlMzMwNzdhY2E3NTQzOWNkNTk5ZjM1YjhmOTNjY2NmOTBlZjkxNDcxMWViZWFiMWYxMmFiZTdlMCJ9; hanime1_session=eyJpdiI6Ikw5bklkcTY1bFRpWjVCVDRWYkE3Snc9PSIsInZhbHVlIjoiTUZNcTJONkNoWWlmVFg5QWRmSG5jUEQ0MEEyenRUYWNMaDNYcWVXdHZPXC8xdHcxeUlHSnp4Y3YwN0RmNERQMnoiLCJtYWMiOiI2ZWE4ODAyMmY4NjRjMjllMjc4NWNjYjJiNDJjNTQ3NzkxNzgxYjI0NjA1NGQyNzY0MWJkY2VlZTM0NjdmNmFkIn0%3D; _gat_gtag_UA_125786247_2=1; _ga_2JNTSFQYRQ=GS1.1.1716998399.58.1.1717000962.0.0.0; _ga=GA1.1.345241207.1705332447'
    cookies_dict = {}
    for item in cookies_str.split("; "):
        key, value = item.split("=", maxsplit=1)
        cookies_dict[key] = value
    return cookies_dict

# 获取 Cookies
COOKIES_DICT = get_cookies_dict()
#print("COOKIES_DICT=", COOKIES_DICT)

class ComicsscrapySpiderMiddleware:
    # Not all methods need to be defined. If a method is not defined,
    # scrapy acts as if the spider middleware does not modify the
    # passed objects.

    @classmethod
    def from_crawler(cls, crawler):
        # This method is used by Scrapy to create your spiders.
        s = cls()
        crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
        return s

    def process_spider_input(self, response, spider):
        # Called for each response that goes through the spider
        # middleware and into the spider.

        # Should return None or raise an exception.
        return None

    def process_spider_output(self, response, result, spider):
        # Called with the results returned from the Spider, after
        # it has processed the response.

        # Must return an iterable of Request, or item objects.
        for i in result:
            yield i

    def process_spider_exception(self, response, exception, spider):
        # Called when a spider or process_spider_input() method
        # (from other spider middleware) raises an exception.

        # Should return either None or an iterable of Request or item objects.
        pass

    def process_start_requests(self, start_requests, spider):
        # Called with the start requests of the spider, and works
        # similarly to the process_spider_output() method, except
        # that it doesn’t have a response associated.

        # Must return only requests (not items).
        for r in start_requests:
            yield r

    def spider_opened(self, spider):
        spider.logger.info("Spider opened: %s" % spider.name)


class ComicsscrapyDownloaderMiddleware:
    # Not all methods need to be defined. If a method is not defined,
    # scrapy acts as if the downloader middleware does not modify the
    # passed objects.

    @classmethod
    def from_crawler(cls, crawler):
        # This method is used by Scrapy to create your spiders.
        s = cls()
        crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
        return s

    def process_request(self, request: scrapy.Request, spider):
        # Called for each request that goes through the downloader
        # middleware.

        # Must either:
        # - return None: continue processing this request
        # - or return a Response object
        # - or return a Request object
        # - or raise IgnoreRequest: process_exception() methods of
        #   installed downloader middleware will be called
        request.cookies = COOKIES_DICT  # 请求时加入 Cookies 登入信息
        return None

    def process_response(self, request, response, spider):
        # Called with the response returned from the downloader.

        # Must either;
        # - return a Response object
        # - return a Request object
        # - or raise IgnoreRequest
        return response

    def process_exception(self, request, exception, spider):
        # Called when a download handler or a process_request()
        # (from other downloader middleware) raises an exception.

        # Must either:
        # - return None: continue processing this exception
        # - return a Response object: stops process_exception() chain
        # - return a Request object: stops process_exception() chain
        pass

    def spider_opened(self, spider):
        spider.logger.info("Spider opened: %s" % spider.name)
